Clutch mechanism



March 17. 1931. J. P, DALY CLUTCH MEGHANIsu 2 Sheets-Sheet 1 Original Filed Dec. 9 1925 Nil ww. l Y

A TTORNEYS' 'March 1 7, 1931.

J. P. DALY 1,796,283

CLUTCH MECHANI SM Original Filed Dec. 9,. 1925 2 Sheets-Sheet 2 INVENTOR.

A TTORNEYS sums i Patented Mar. 17, 1931 lJosnrn r.

PATENT OFFICE DALY, or nonwoon, omo, Assrsnoa To man rnosrnmy COMPANY, me.,

or svnncu'sn NEW Yonx, A conronmxon or NEW -Yonx i CLUTCH Meenemen u I Appnmionniea December s, 1925, Asemi no. rases. renewed my s, 1m.

. v vThis invention relates toclutch mechanism f particularly periodic. clutch mechanism. and has for itsV object an operating and controlling f mechanism therefor by which the operator is I A vrequired to use bothjhands to engage the clutch and hold they clutch engaged during one of the periodszofI/operation of the clutch, as the period in which. the clutch is engaged while a .part vof the driving mechanism of a o press having an opening and closing move ment is in operation so that there is no lia bility of the operators hands being caught in the pressi @ther objects appear throughout the speeiiicatio'n. Y s The inventio'n consists in thenovel features 'and -in the combinations 'and constructions .hereinafter set` fort-h and claimed.

yIn describing this invention reference is had. to the. accompanying drawings in Which like characters designate corresponding parts in all the views f Figure l` ris a longitudinalfsection'al view through a clutch. mechanism embodying my invention.- i Figure 2,isan enlarged fragmentary sectional view online 2 2, Figure l.

Figure 3 is an elevation of a pressing machine embodying my invention. Y This clutch mechanism comprises, genervrally, driving and driven shafts, shiftable Y .clutch sections normally disengaged and rotatable respectively lwith such shafts, one section being shiftable into and out ot' engageinent'with the other, means as a spring acting l on a shifter .'or fork vfor holding the fork or the shiftablelsection in disengaged or out position, and` forreturning the section to its yout position. `Whenuthe yforce tending to hold it initsrengaged position is discontinued, 4o locking mechanism for normally holding the shii'tabie section Y from yshitting movement, manual means including mechanism for preliminarily operatingthe locking mechanism to unlock the camandto shift the shiftable sectioninto its engaged position, said manual means comprising two operating members and connections by which both of said members act to; effect the throwing of the clutch section to its engaged position, and one of them, and preferably either of them, operates to unlock the locking mechanism whereby the operating of both operating members is required to unlock the locking mechanism and to throw the clutch section into engaged position. i

1 and 2 designate, respectively, the driving and driven shafts which are arranged in axial alinement, the' driving shaft being the armature shaft of an electric motor 3, andthe driven shaft being mounted in bearings in a suitable housing or casinget` The driven shafts here shown as having a Worm 5 thereon which meshes with the worm gear 6 mounted on a. third shaft 7,. extending crosswise of the shaft 2, the third shaft serving to transmit the motion to a mechanism to be actuated as the motion transmitting mechanism of a pressinv.' machine. The third shaft 7 is journaled 1n suitable bearings in a housing 4. l 9 and. l0. are respectively the driving and driven sections of the clutch, the section 10 Y of which is'rotatable with the driven shaft 2 being vpreferably shiftable axially into and out of engagement with the driving section 9. However both sections are mounted upon the same shaft as the driven shaft 2, the driving section 9 being rotatable relatively to or about the driven shaft 2. The driving seetion 9 is herevshown as mounted on an antifrctionfbearing 11 which includes an inner ring mountedupon a sleeve 12 on a reduced end portion of the driven shaft 2. This sleeve l2 and the bearing are held from displacement by a Washer 13 abutting against the end of the sleeve 12 and thrusting it against the shoulder at the inner end of the reduced portion of the shaft 2 on which the sleeve is mounted.v The Washer is held in position Aby a screw 14 extending through the washer and threading into the end of the-shaft 2l.

Thisdriving section is connected to the driving shaft throughva suitable coupling as a flexible `disk 15 keyed to the fly wheel 16 on the shaft 1, by one or more pins 17, andY similarly keyed tothe driving section 9 by one or more pins 18. This mounting of the Y clutch sections on the same shaft on the driven shaft makes the clutch mechanism a unit v which can beureadily applied tofany motor.

The clutch here shown is a cone clutch.-

- The driven section lOhas ahub 19 slidablymoimted on the shaft 2,.this hub being l Shiftab1efbymea-nsef fork 20 Apiyroiea .at 21 to a lug on the 'hbu'sing4 and having a bifur- `cated 'or VVring shaped portion"which coacts y with the ring 22, lying betweentwo Ycellars" 23, 24 Aon .thehub-- 19; The collar23 thrustingl againstt-her web of the-clutch section 10 and; the collar 24 has al hub 25 keyedftothe shaft 2 as bypa Woodrufkey andset screw 26.

Y, Thecollar '24 isf keyed to the k,hub 19*Y of the v 'section 10 vbyapin 27 threading'into the hub 19 "andmovable in a lengthwise slot 28 in the collar 24, suitable anti-friction-thrust bearings areinterposedfbetween the ring 22and the collars.

l. disks 31 are interposedbysthe rear side` of the clutchseotion 10,'an abutment plate 32'fiXe'd from rotary movement and Acarried by sultable:4 brackets 34 projecting from lthe `hous- @bviouslyshi-'fting ofthe fork'20 to the right l'wil-l carry the clutchseotion 10 into en- Y gagement with the *clutch section 9, and suchv V.movement Lwillv move the`clutch section 10 relatively to thecollarf24fowing to; the pin and jslot` connection/27-28. VMovement of the shifter 20to the left by the 'spring 30 whentheforce-tending to hold the shifter 2O 'initsrightf handj'position is discontinued,

. will disengage the-'clutch sections 9*,and10 vand Vcause a'brake disk431l tostop the rotation 'of the driven section 10' and shaft 7.

1 rllhe lockingmechanismfor normally preventing theshifting of the section A10, into engagement withthe section'9 is actuated or f controlled fromthe driven shaft or some part driven therebyas thethi'rdshaft' and com- Vprises al controller elementrotatable with the shaft 7, andhaving a preliminarily shifting. movement about its axis relatively to the shaft 7 or the driven" shaft 2 and a lock ele- Y"te mentcoacting with lthe controller element and lconnected tol the vclutch shifter; This coni Vtroller' element is here shown' asa cam 35 mountedon the shaft'7 and having a wide i keyvway or keyways 36 therein for vreceiving keys a'of less width than the key ways Y justment.

1,796,283l y' Y Y sothat the cam can rotate ,av limited distance relatively to the shaft 7. yThe lockelement is vcoact'ing with a lever 37 lconnected to the fork to shiftit and hence shift the clutch section 10, thisY lever having 'a' follower coacting withthe cam. The-lever 37 is mounted upon the same shaft 21 that the shifting fork 2O is mountedon, and it is connected to the shifting fork 20 by an adjusting screw 38 eX- tending through ythe lever 37 ,and through an arm 39 depending fromth'eshifters fork 20 below the shaft 21. vThiscon'neetion kb-itw'een screw 38 ris merely'for thepurpose of ad- The cam ishere'shown asfformed'with a 'camgroov'e at its side Vfac'e'and they lever 37 hiasfa follower or rollerj40in thegroove. The groove comprises a wide portion 41 and a narrowportiou42 andcam points or lifters 43 at thepjunctions of said widea-nd narrow portions; The outer wall of'the-wide por- Y, tion is of greater-radiusfthan theouter wall of the narrow portion 42 but the'innerwall ofboth portions are of `substantially the same radiusgV j' ,v Y Y The manualmeans includes two operating members both of which'must beoperatedto unlock theshifter fork 20 and tofshift it.

The manual means comprisesvr means 'for' moving ythe cam 35- about its axis-relatively tothe shaft 7 and thus moving it a sufcient amount to unlock the shifter fork 20 so that the shifter fork oan-V be actuated; byY the manual means to carry the clutch section'lO into engagement vwith the clutch section 9 after such preliminaryI movement by the manual means, or after' the lost motion between the `key 35a and the-key WayV 36 is taken up. 'Thefollower 0r roller 4() normally vrides on one o-r "the other of the cam points 43 so that the shifterv fork 2() cannot be actuated. Y The preliminary kmovement or frotaton of Ythel cam 35 relatively to theshaft 7 moves the cam y35v in a clockwise direction,

and shifts the cam point 43 out of Vengage- "i ment with the follower so that nowl when the fork20 is 'shifted the arm 37 Vis freeftovmove to the inner side ofthe cam groove. During one period vofthe cycle of fmovem'entof the cam, 'that'is while'tlie cam is making a half 'revolution when `the press :is being VKclosed, the

roller or follower'goes to the bottom or inner side of the wideny portion 41 of the' cam i groove so that the force tending'to hold the 'clutch-section 10 engagedV must .be constantly appli-ed against the spring 30 and on the discontinuing of vsuch force at anytime during suchperiod of'movement, the clutch section v10 willautomatically shift to its out position. When the cam is in the diametrically Vopposite position 'fromthatV shown in Figure 1, thatf is whenthepositions'lof the wide and narrow portions 41 and 142V of the cam groove lare reversedl the Vpreliminary movementlof the cam 35 by manual means will shift the campoint 43 in a-clockwise direction las before out of engagement with the follower' or roller 410, Aand force the roller tothe bottom of the ynarrow portion 42 of the: cam groove, thusthrowing in the clutch section 10 and, holding itin while the cam makes a half revolution when the cam point will. again push the follower outwardly permitting the spring 30130 open the clutch.

- This period of the cycle of movement takes place when a press is being opened and hence when there is no danger of the operator being injured if both hands .are not busy, and toy effect this operation but a momentary operation of the manual means is necessary. 'The manual means here illustrated are included in pressure operated or hydraulic elements-as for instance cylinders and pistons movable in the cylinders, connections as pipes' through which the pressure is transferred from operating means to the cylinders.. i The operating means are also a pair of pressure operated elements as cylinders having manually operable lpistons therein.

50designates lthe cylinder and 5l the pis- `ton movable therein for operating the fork 2() aga-inst the spring-30, the Ypiston being connectedto the fork by a link 52. The piston hereshown includes a headslidable in the cylinder and a sylphon 53connected to one end to the head and at its other end to a head 54 within the cylinder.

The element for preliminarily rotatingr the cam is of similar construction, the cylinderibeing designated 55, the piston55a, the sylphon 56. The piston 55a is connected by a. linl57 to an actuator or lever 5S pivoted at 59 to a head 60 of the housing 4, the lever 58 having an arm 61, carrying a ratchet tooth 'Q2 thereonarranged to strike a shoulder or pin `68 on the carni. There are two of these shoulders 63 cdametrically opposite each other. The' tooth VG2 is pivoted at 6: to the endof the lever arinl and is pressed by a spring 64e. This tooth is `mound-ed to ratchet downwardly past the shoulder but to have a'iigidconnection with the shoulder 6? in order to move the cam in a clockwise oirection. A Obviously during' movement of the lever58, by the piston 5. the tooth 62 will engage the pin G3 andshift the cam until the pinis in the'position indicated in dotted lines in7Figure l, such movement taking up the lost m'otion between the. lrey 35a and the key slot 36,`and moving the cam in a clockwise direction suliiciently to moveeither one ofthe cam points 43. out from under the follower Ill).

The operating elements are here shown as cylinders 66 and 67 having pistons or sylphons therein similar to those heretofore described. The cylinders 66 and 67 are connected by pipes 68 and 69 toene pipe or conduit 70 connected to both cylinders 50 and 55. These cylinders 66 and 67 are of such capacity that both the pistons must bedepressed to actuate the piston 5l'. Although either one of them has sufficient capacity to operate the lever 61 to unlock the lock mechanism. The pipe system. 68, 69 and 70and the cylinders are filled with a fluid as oil.

lUpon the depression of either one of the buttons 7l, 72 which are connected to the pistons or sylphons within the cylinders 66 and 67, the piston 55 will be actuated to actuate the lever 58 and hence preliminarily shift the cam to unlock the shifter fo'rl-r 30 while thereafter the operator depresses the other button while holding the first depressed so that now the pressure in the pressure system is suiiicient to actuate the piston 5l to shift the fork-2O against the action of the spring 30 and hence to carry the clutch ,section l0 into engagement with the clutch section 9, so that the shaft 2 is actuated by the driving shaft l. lf at any time the operator lets go of either buttons 7l or 7 2, the pressure in the pipe system will be relieved so that one button cannot exert enough pressure to hold in the clutch.

It is, therefore, necessary to operate the piston in both cylinders G6 and Gisimultaneously to throw infand to hold in the clutch while the follower is in the wider portion il of the cam slot. However when the follower is at the entrance of the narrower portion 42 f of the cam slot, the depression of either one of the pistons in the cylinders 66-67 will throw in the clutch for the reason that the depression of either one of such pistons will actu-.ate the cam preliminarily and in so doing the follower will be forced by the narrower portion l2 of the cam groove inwardly to the inner side of the narrower part 4-2 of the cam groove, and such inward forcing will actuate the lever 37 and fork 2t). However such an operation may in some instances require too much force'for one cylinder and, thereforeA` to operate the machine with such a condition present it would be necessary to depress both buttons.

Usually when this clutch mechanism is applied to two or more machines operated by one operator each machine has a remote control near the other machine, such remote control consisting of a cylinder 73 having a sylphon therein operated by a button 7 4, the cylinder being connected by a. pipe 75 in the pipe 70. It will be understood that the cylinder 7 3 is located remote from the machine it controls as on another machine where the operator works on more than one machine. This cylinder 7 3 is of suflicient size or capacity so that the depression of the piston therein actuates both pistons 51 and 55.

In Figure 3 is shov'n a pressing machine embodying the usual stationary buck A, a movable press head B carried by a yoke or lever C, pivoted at D between its ends to an upright rising from the frame of the machine, the yoke C being actuated by a toggle f ico lll() F, Connected to the reararm'of'the yoke, the

V lower linkof the toggle having forwardly extending lever armiG, which is actuated by the shaft 7, being connected to the shaft V7 by a crank and connectingv rod H. VUpon turning the shaft 7 one-half revolution thef arm fG. will be depressed to straighten the toggle F and bring the press head B down on the work on the buck vA. Another half revolutionv of the shaftV 7 Vwill raise theV lower Gandl fold the toggle 7 ,thus lifting the'headV B olf the buck A or opening the press. While the presshead 5 isbeing closed, the follower 40 is inthe wider portion 41 of the cam somewhat so that both buttons'65, 66 mustbe held depressed until the press is closed.v When the press is being opened the follower is in the narrowerportion 42, and hence it'is necessary to give but a momentaryoperation of the button71, 72 or the remote control button 7 4 ast-he camfollower being in the narrower y portion 42 of-the cam groove, holds the shifter 1 the `wider portion 41 of the cam groove.

fork in its closed position'until onek of the com points 43 rides under the follower and forces'it to the outer side ofthe entranceof A clutch is controlled by the rotation of the slower' running "shaft` 7. As the clutch cony nects two high speed shafts connected to the ower shaft 7 'throu' Vh areduotion @fearing it lO g e .e

- may becomparatively'small comparted with a clutch necessary lto the shaft 7. Y

'be assembled with the drive mechanism and such mechanism may be readily applied to Owing to the arrangement of the clutch on the driven shaft2, the clutch mechanism can any motor.' .The operator 'depresses both buttons or heads 71, 7 2 thus preliminarily ro. tating the'cam 35 to move'the cam point' 43 out from underV the follower of the lock lever 37 so that the pressure in the cylinders 67 is? Y transferred to the cylinder to 'actuate the piston 51l therein, and hence actnate the fork 2O against'the spring 30 toengage the yclutch section 10 with the section 9. As long asfthe operator holds both these heads or buttons 71,

372 depressed, the clutch willbe held in against the springBO. When the shaft 7 makes a half revolutionV the operator determines by Vthe feel vof the machines when the headis closed and releases the buttons 71, 72. When 'the press is closed the parts are Ain a diametri- 1callyV opposite Yposition'from that shown in e Eigure 1, and to open the press,y either one of `rthe push buttons7 1, 72 may be depressed, if

wardlyinto the entrance of the norrawer portion -42 of the cam slot, and thus throwV in the clutch, otherwise both bush buttons71, 72 must be depressed lto throw in the .clutch 42.

carry the torque load of The follower'being. inthe narrower por tion of the cam groove slot holdsthe Vclutch engaged until the shaft makes another half revolution that isuntil the-press opens, and at the end of the half revolution the incline on the camf43 forces thefollower tothe 'outer side of the lentrance ofthewider portionk 41, of the cam slot, thus throwing, the lever37 to actuate' the shifter fork 20 "or permit Athe spring e y clutch into open position.

Whatl claim isg-T 1 f 1. ln a clutch mechanism, the combination of driving and driven shafts arrangedin axial alinement, a third shaftv arranged crosswise of the driven shaft, reduction'gearing connectingV the Ldriven shaftfand 'the third shaft, normally disengaged'clutch sections rotatable respectively with the. ydriving and Vdriven l shafts, one section being shiftable in and out of Vengagement with the other, a shifterV for Yshifting the shift-able section and a spring 'i shaft Yandfrotatable therewith, and-.also having a movement aboutits axis relatively to the third shaft,and'the,mannal ymeansl including a partfor shifting the controller to permit lthe shiftable clutch Vse'ctionto vbe moved byy the manual means into engaged position. i Y l 2. In a clutch mechanism, the combination of driving and ldriven shafts arranged in of 30 to `actuatev the forkfto throwthe axial alinement, a'third shaftarranged cross-V wise` ofthe driven shaft, reduction gearing connectingthev driven shaftand. the third shaft, normallyV disengagedv clutch sections ro- .tatable respectivelyV with the driving .and driven shafts, one section :being shiftable in and out of engagement'with the other, a shifter for shifting 'theL shiftable section and a springacting'on.the.shifter to hold the shiftable section ont'of engaged position, manual L means operable to actuate the shifter'to shift the vshiftable section into Vengaged position, locking means forV normally holding the shifter from movementby the manual means 'comprising a .controller 1 mounted on Vthe kthird shaft, said controller comprising'acam providedwith a cam groove having a wide portion anda narrow portiomthe outer wall of the wide portion being of greater lradius than the outer wall of the narrow portion, and the inner walls of both portions being of substantially the same radins, thecam having points at the junctions'of said groove portions, the lock mechanism further includinga part connected to the -shifter to shift the same, and a kfollower in thecam groove, 'the controllerL having a movement aboutz its axisrelatively Vto thethird shaft, andthe manual means including a part for shifting the controller to permit the shiftable clutch section to be moved by the manual means into engaged position. v

3. In a clutch mechanism, the combination of driving and driven shafts, normally disengaged clutch sections rotatable respectively with such shafts, one section being shiftable into and out of engagement with the other, a Shifter coacting with the shiftable section, means tending to throw the shiftable section ink one direction, lock mechanism for normally holding the shifter and the shiftable section Y from shifting movement by said means, Vand manual means including connections for operating the lock mechanism to unlock the same and shift the shiftable clutch section in the other direction; the lock mechanism comprising a rotatable part connected to the driven shaft to be actuated thereby, said part being shiftable about lits axis relatively to the driven shaft, said connections of the manual means coacting with said part to shift the same about its axis.

4. In a clutch mechanism, the combination yof driving and driven shafts, normally disengaged clutch sections rotatable respectively with such shafts, one section being shiftable into and out of engagement with the other, a shifter coacting with the shiftable section, means tending to throw the 'shiftable section in one direction, lock mechanism for normally holding the shifter and the shiftable section from shifting movement by said means, and manual means including connections for operating the lock mechanism-to unlock the same and to shift the shiftable clutch section in the other direction, the lock mechanism comprising a rotatable cam .connected to the driven shaft to be actuated thereby, said cam also'being shiftable about its axis relatively to the driven shaft, said connections coacting 4with the cam to shift it about its axis.

5. In a clutch mechanism, the combination of driving and driven shafts, normallydisengaged clutch sections rotatable respectively with such shafts, one section being shiftable into and out of engagement with the other, a shifter coacting with the shiftable section, means tending to throw the shiftable section i into disengaged position, lock mechanism for normally holding the shifter and the shiftable section from shifting into engaged position and manualmeans including connections for operating t-he lock mechanism to unlock the same and to shift the shiftable clutch section into engaged position, the lock mechanism including a rotatable part connected to the driven shaft to be actuated thereby and also shiftable about its axis relatively to the driven shaft and a member coacting kwith said part, said part having ymeans for holding the lock member out during a part of the cycle of movement of 6. The clutch "mechanism of claim 4 in which the cam lhas a cam groove, a portionL of the groove being wider and having its outer wall of larger radius than that of the other portion, the inner wall of both portions being of substantially the same radius, the cam alsofhaving points at the junctions of said portions and a mem'berconnected to the shifter to shift the same to its out position and having a follower movable in the cam groove.

7. The combination of a shiftable member for controlling the transmission of motion to a driven member, a shifter coacting with said shiftable member, means tending to throw the shifter in one direction, lock mechanism for normally holding the shifter and the shiftable member from shifting movement by said means, and manual means including connections for operating the lock mechanism to unlock the same and shift the shiftable member in the other direction, the lock comprising a rotatable part, timing gearing connecting the driven member and the rotatable part, said part being shiftable about its axis and relatively to the driven member, said connections of the manual means coacting withpsaid part to shift the same about its axis.

8. The combination of a shiftable member for controlling the transmission of motion, a l

driven member to be actuated, a shifter coacting with said member, means tending to throw the shiftable member in one direction, lock mechanism for normally holding the shifter and the shiftable member from shifting movement by said means, and manual means including connections for operating the lock mechanism to unlock the same, and shift the shiftable member in the other direction, the lock mechanism comprising a rotatable cam, reducing gearing between the driven member and the cam, said cam being shiftable about its axis relatively to the driven means and said connections coacting with the cam to shift it about its axis.

9. The combination of a shiftable member for controlling the transmission of motion, a driven member, a shifter coacting with said member, means tending to throw the shiftable member in one direction, lock mechanism for normally holding the shifter and the shiftable member from shifting movement by said means, and manual means including connections for operating the lock mechanism to unlock the same and shift the shiftable member in the other direction, the lock mechanism including a rotatable part connected to the driven member to be actuated thereby and also shiftable about its axis rela- "Hij tiveiyftothe driven member" and-'asecond part eoac'ting'with'the rst part, it having means for holding the'looking part out during e a portion "of the 'cycleof movementv of thel 5 driven member and permitting saidrloeking part vto return Vto its" locked position during another portion ofthe-Cycle of movement of the driven member unlessheid in thev locked A position by its manual' means.V Y f "16 In testimony Whereof,'I have hereuntoy signed my name, at Syracuse, in thek county of Onondaga, and n the State of New York, this4th day oDec.,`fl925. Y Y

. Y v JOSEPH P.' DALY.

so y 

